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Santander UK CEO Mike Regnier Steps Down After TSB Acquisition

Regnier's exit comes after leading Santander UK through the TSB acquisition. The incoming CEO will oversee the combined entity serving 28 million customers.

In this image two trains are beside the platform. Two screens are hanged from the roof. Bottom of...
In this image two trains are beside the platform. Two screens are hanged from the roof. Bottom of image there is a person near the staircase. There is a door to the wall. Few boards are hanged from the roof.

Santander UK CEO Mike Regnier Steps Down After TSB Acquisition

Mike Regnier, the outgoing chief executive of Santander UK, expressed gratitude to the board and management team as he announced his departure. The move comes after Santander UK acquired TSB Bank for £2.9bn in July, adding 5 million customers and £69bn in assets to its portfolio.

Regnier, who has led the bank for over four years, cited the integration of TSB as a reason for his departure. He suggested that the process had taken longer than expected, allowing time for the board to find a successor. The selection process is currently ongoing and is set to conclude by early 2026.

The acquisition of TSB, which included 218 branches, £34bn in mortgages, and £35bn in deposits, accelerates Santander's strategy in the UK. The combined entity will serve 28 million customers and rank second in personal current account branches. Meanwhile, the deal helped Banco Sabadell fend off a hostile takeover from BBVA, potentially posing a threat to Santander's market share in Spain.

Regnier's exit, effective in the first quarter of 2026, marks a significant change in leadership at Santander UK. The acquisition of TSB, however, solidifies the bank's position in the UK market and sets the stage for the incoming chief executive to lead the combined entity.

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